•100% Brand new and high quality.
•Size available: 1.2mm / 1.5mm / 1.8mm / 2.0mm
•Material: Diamond Coated High Speed Steel
•Straight shank design is more suitable for many electric drills and drilling machines
•Diamond coated on sharp and twisted flute,will make the drilling be more easy and effortless.
•Suitable for glass, marble, tile ,jade, agate or rock.
•Add some water when drill a hole for better processing